<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.3</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>358</ContextCount>
  <ElementCount>322</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>95</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-document-and-entity-information</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Consolidated Balance Sheets (Current Period Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-consolidated-balance-sheets-current-period-unaudited</Role>
      <ShortName>Consolidated Balance Sheets (Current Period Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-consolidated-balance-sheets-current-period-unaudited-parentheticals</Role>
      <ShortName>Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Consolidated Statements of Operations (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-consolidated-statements-of-operations-unaudited</Role>
      <ShortName>Consolidated Statements of Operations (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-consolidated-statements-of-changes-in-shareholders-equity-unaudited</Role>
      <ShortName>Consolidated Statements of Changes in Shareholders' Equity (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-consolidated-statements-of-cash-flows-unaudited</Role>
      <ShortName>Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Disclosure - Note 1 - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-1-summary-of-significant-accounting-policies</Role>
      <ShortName>Note 1 - Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Note 2 - Income (Loss) Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-2-income-loss-per-share</Role>
      <ShortName>Note 2 - Income (Loss) Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Note 3 - Intangible Assets, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-3-intangible-assets-net</Role>
      <ShortName>Note 3 - Intangible Assets, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Note 4 - Long-term Debt, Net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-4-longterm-debt-net</Role>
      <ShortName>Note 4 - Long-term Debt, Net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Note 5 - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements</Role>
      <ShortName>Note 5 - Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Note 6 - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-6-income-taxes</Role>
      <ShortName>Note 6 - Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - Note 7 - Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-7-equity</Role>
      <ShortName>Note 7 - Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - Note 8 - Share-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation</Role>
      <ShortName>Note 8 - Share-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - Note 9 - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-9-segment-information</Role>
      <ShortName>Note 9 - Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Disclosure - Note 10 - Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-10-contingencies-</Role>
      <ShortName>Note 10 - Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - Note 11 - Variable Interest Entity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-11-variable-interest-entity-</Role>
      <ShortName>Note 11 - Variable Interest Entity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - Note 12 - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-12-subsequent-events</Role>
      <ShortName>Note 12 - Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995464 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-significant-accounting-policies-policies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-1-summary-of-significant-accounting-policies</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995465 - Disclosure - Note 1 - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-1-summary-of-significant-accounting-policies-tables</Role>
      <ShortName>Note 1 - Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-1-summary-of-significant-accounting-policies</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995466 - Disclosure - Note 2 - Income (Loss) Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-2-income-loss-per-share-tables</Role>
      <ShortName>Note 2 - Income (Loss) Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-2-income-loss-per-share</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995467 - Disclosure - Note 3 - Intangible Assets, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-3-intangible-assets-net-tables</Role>
      <ShortName>Note 3 - Intangible Assets, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-3-intangible-assets-net</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995468 - Disclosure - Note 4 - Long-term Debt, Net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-4-longterm-debt-net-tables</Role>
      <ShortName>Note 4 - Long-term Debt, Net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-4-longterm-debt-net</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995469 - Disclosure - Note 5 - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements-tables</Role>
      <ShortName>Note 5 - Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995470 - Disclosure - Note 8 - Share-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-tables</Role>
      <ShortName>Note 8 - Share-based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995471 - Disclosure - Note 9 - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-9-segment-information-tables</Role>
      <ShortName>Note 9 - Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-9-segment-information</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995472 - Disclosure - Note 1 - Summary of Significant Accounting Policies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-1-summary-of-significant-accounting-policies-details-textual</Role>
      <ShortName>Note 1 - Summary of Significant Accounting Policies (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-1-summary-of-significant-accounting-policies-tables</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995473 - Disclosure - Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-1-summary-of-significant-accounting-policies-disaggregation-of-revenue-details</Role>
      <ShortName>Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995474 - Disclosure - Note 2 - Income (Loss) Per Share - Basic and Diluted Income (Loss) Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-2-income-loss-per-share-basic-and-diluted-income-loss-per-share-details</Role>
      <ShortName>Note 2 - Income (Loss) Per Share - Basic and Diluted Income (Loss) Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-2-income-loss-per-share-tables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Note 2 - Income (Loss) Per Share - Antidilutive Securities Excluded from Calculation of Diluted Income (Loss) Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-2-income-loss-per-share-antidilutive-securities-excluded-from-calculation-of-diluted-income-loss-per-share-details</Role>
      <ShortName>Note 2 - Income (Loss) Per Share - Antidilutive Securities Excluded from Calculation of Diluted Income (Loss) Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-2-income-loss-per-share-tables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995476 - Disclosure - Note 3 - Intangible Assets, Net (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-3-intangible-assets-net-details-textual</Role>
      <ShortName>Note 3 - Intangible Assets, Net (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-3-intangible-assets-net-tables</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995477 - Disclosure - Note 3 - Intangible Assets, Net - Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-3-intangible-assets-net-intangible-assets-details</Role>
      <ShortName>Note 3 - Intangible Assets, Net - Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995478 - Disclosure - Note 3 - Intangible Assets, Net - Estimated Amortization Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-3-intangible-assets-net-estimated-amortization-expenses-details</Role>
      <ShortName>Note 3 - Intangible Assets, Net - Estimated Amortization Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995479 - Disclosure - Note 4 - Long-term Debt, Net (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-4-longterm-debt-net-details-textual</Role>
      <ShortName>Note 4 - Long-term Debt, Net (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-4-longterm-debt-net-tables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995480 - Disclosure - Note 4 - Long-term Debt, Net - Long-term Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-4-longterm-debt-net-longterm-debt-details</Role>
      <ShortName>Note 4 - Long-term Debt, Net - Long-term Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995482 - Disclosure - Note 4 - Long-term Debt, Net - Scheduled Future Maturities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-4-longterm-debt-net-scheduled-future-maturities-details</Role>
      <ShortName>Note 4 - Long-term Debt, Net - Scheduled Future Maturities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995483 - Disclosure - Note 5 - Fair Value Measurements (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements-details-textual</Role>
      <ShortName>Note 5 - Fair Value Measurements (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements-tables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995484 - Disclosure - Note 5 - Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements-schedule-of-fair-value-assets-and-liabilities-measured-on-recurring-basis-details</Role>
      <ShortName>Note 5 - Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Note 5 - Fair Value Measurements - Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements-fair-value-liabilities-measured-on-recurring-basis-unobservable-input-reconciliation-details</Role>
      <ShortName>Note 5 - Fair Value Measurements - Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995486 - Disclosure - Note 5 - Fair Value Measurements - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-5-fair-value-measurements-schedule-of-fair-value-measurement-inputs-and-valuation-techniques-details</Role>
      <ShortName>Note 5 - Fair Value Measurements - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995487 - Disclosure - Note 6 - Income Taxes (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-6-income-taxes-details-textual</Role>
      <ShortName>Note 6 - Income Taxes (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-6-income-taxes</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995488 - Disclosure - Note 7 - Equity (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-7-equity-details-textual</Role>
      <ShortName>Note 7 - Equity (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-7-equity</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995489 - Disclosure - Note 8 - Share-based Compensation (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-details-textual</Role>
      <ShortName>Note 8 - Share-based Compensation (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-tables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995490 - Disclosure - Note 8 - Share-based Compensation - Key Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-key-assumptions-details</Role>
      <ShortName>Note 8 - Share-based Compensation - Key Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995491 - Disclosure - Note 8 - Share-based Compensation - Stock Option Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-stock-option-activity-details</Role>
      <ShortName>Note 8 - Share-based Compensation - Stock Option Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995492 - Disclosure - Note 8 - Share-based Compensation - Unvested Balance of Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-unvested-balance-of-options-details</Role>
      <ShortName>Note 8 - Share-based Compensation - Unvested Balance of Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995493 - Disclosure - Note 8 - Share-based Compensation - Restricted Stock Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-restricted-stock-activity-details</Role>
      <ShortName>Note 8 - Share-based Compensation - Restricted Stock Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995494 - Disclosure - Note 8 - Share-based Compensation - Share-based Compensation Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-8-sharebased-compensation-sharebased-compensation-expenses-details</Role>
      <ShortName>Note 8 - Share-based Compensation - Share-based Compensation Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Note 9 - Segment Information (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-9-segment-information-details-textual</Role>
      <ShortName>Note 9 - Segment Information (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-9-segment-information-tables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995496 - Disclosure - Note 9 - Segment Information - Schedule of Segment Reporting Information, by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-9-segment-information-schedule-of-segment-reporting-information-by-segment-details</Role>
      <ShortName>Note 9 - Segment Information - Schedule of Segment Reporting Information, by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995497 - Disclosure - Note 10 - Contingencies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-10-contingencies-details-textual</Role>
      <ShortName>Note 10 - Contingencies (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-10-contingencies-</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="flnt20250930_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995498 - Disclosure - Note 11 - Variable Interest Entity (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.fluentco.com/20250930/role/statement-note-11-variable-interest-entity-details-textual</Role>
      <ShortName>Note 11 - Variable Interest Entity (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.fluentco.com/20250930/role/statement-note-11-variable-interest-entity-</ParentRole>
      <Position>53</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>flnt-20250930.xsd</File>
    <File>flnt-20250930_cal.xml</File>
    <File>flnt-20250930_def.xml</File>
    <File>flnt-20250930_lab.xml</File>
    <File>flnt-20250930_pre.xml</File>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="flnt20250930_10q.htm">flnt20250930_10q.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="992">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="5">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
